Attottst j



Filed Jan. 23, 1950 Patented May 26, 1931 The present invention relates to pencils and has for an important object thereof the combination with a pencil, a measuring device and a compass.

j Another ob'ect of this invention is to provide an attac ment which ma be mounted upon a pencil of conventiona construction which will enable the user to make various measurements, the attachment including the provision of means for performing operations ordinarily performed bya compass or the like.

A further object of this invention is to jrovide in a device of this character means or performing the ordinary functions of a of calipers.

A still further object of this invention is to "vide a combination tool of the character described which is exceedingly compact and 5720 can be readily and cheaply manufactured- The above and various other objects and advantages of this invention will in part be described in and in part be understood from the following detailed description of the present preferred embodiment, the same being illustrated in the accompanying drawings wherein:

igure 1 is an enlarged detailed side elevation of a device constructed according to the preferred embodiment of this invention showing the cap removed from one end of the casing;

Figure 2 is a longitudinal section taken substantially through the center of the'device;

Figure 3 is a fragmentary longitudinal section of the device;

Figure 4 is an end elevation of the device showing the cap removed therefrom;

Figure 5 is a detailed side elevation of the pivot; p

Figure 6 is a detailed side elevation of the compass lead hol member; 1 Figure 7 is a detailed side elevation of the guide member; and

Figure 8 is a sectional view taken on the line 88 of Figure 2. Referrin to the drawings wherein like numerals 0 reference designate correspondi g parts throughout the several views, the

PATENT OFFICE AUGUST 3. GELARDI, 0! 31011, W You (DIIBINA'HOH PENCIL, RULE, AID OOIPABS Application filed January 23, 1930. Serial Io. 418,864.

numeral 10 desi tee a as of elongated construction anfgf any desire cross section configuration but in the present preferred embodiment, the device is preferably squared in cross section and is provided with an elongated centrally disposed round bore 11 therein, for removably receiving a pencil 12. The casing 10 is provided at the outer faces thereof with suitable indicia for determining linear measurement or the like, the various faces of the casing 10 be numerous scales such as are ordinarily used in making measurements or which are used by draftsmen in making various drawings to scale.

The casing 10 is also provided at one side thereof with an elongated opening 13 spaced inwardly from the outer face thereof in which a slide rule or elongated member 14 is adapted to be mounted. The casing 10 is substantially restricted at the upper end portion thereof as at 15 and a cap member 16 is adapted to be removably mounted on the restricted upper end 15, the cap 16 being provided adjacent the lower end portion thereof with a depression 17 which is adapted to engage in a recess 18 in the casing 10 for removably securing the cap on the casing. The cap 16 is provided with a slot 16a through which the slide rule is adapted to extend and the iImer end of the slide 14 is provided with an inwardly extending stop member 14a which engages in a groove 13a which terminates spaced inwardly of the outer end of the casing 10.

The. slide rule '14 is provided at the outer end thereof with a stop member 19 which is preferably of substantially triangular construction so as to provide caliper means by which various diameters may becomputed after the manner ,of calipers, one face of the slide rule bearing a scale reading from the stop member 19 inwardly to the ca member 16 so that any diameter equal to t e length of travel of the slide rule in the groove 13 may be accurately determined.

In the preferred embodiment of this invention, the casing 10 is adapted to be mounted on a pencil of conventional construction but where desired may be provided with a pencil member 12 which is provided at the v lower end portion thereof with a conventional spiral member 20 in which a tubular lead.

carrying member 21 is adapted to travel. The pencil 12 may be provided at the lower end portion thereof with a conical or ta ring point 22, and the lead carryi me r 21 1s adapted to engage a lead 23, t e lower end portion of the lead extending outwardly through the inted member 22.

The ncii izylinder 24 may be mounted on the ody ofthe pencil 12 in any conventional manner but in the present instance the cylinder 24 is provided with an upwardly extendin pin member 25 which engages in the body 0% the pencil 12 and if desired, a suitable washer member 26 may be interposed between the pencil 12 and t e cylinder 24 so as to facilitate rotation of the cylinder 24. The pencil member 12 may be provided with a securing member 27 which is preferably secured to the upper end portion of the pencil, and a rubber or eraser 28 is adapted to be mounted within the securing member 27. However, I do not wish to be limited to the particular type of pencil disclosed as any conventional pencil may be used in combination with the casing 1 0.

The casing 10 is provided along one face thereof with a resilient clip member 29 which is secured to the casing 10, the clip member 29 being adapted to retain the device in the pocket of the user in the conventional manner. The clip or holding member 29 is preferabl mounted on the casing 10 spaced downward y from the upper end portion thereof, the position of the c i member 29 being determined by the Ian h of the device so that when mounted in t e pocket of the user it will not unduly protrude therefrom. The casing 10 may be provided with an elongated openin 29a if desired so that the casing can be use with a conventional pencil having a clip 29 mounted thereon. The casing 10 is provided at the lower end portion thereof with a threaded opening 30, and the cap 16 is also provided with a similar opening 30a.

The slide rule 14 is similarly provided with a threaded opening 31.

A pivot member 32 which is provided with a suitable threaded portion 33 is adapted to be threadably mounted in the threaded opening 30a in the cap 16.

A compass member 34 which is provided with a threaded portion 35 at one end thereof is adapted to be threadably mounted in the threaded opening 31 in the slide rule. The compass member 34 is adapted to removably hold a lead member 36 in the opposite end thereof so that when it is mounted on the slide rule 14, and the rule is rotated about the axial member 32 a suitable mark will be made indicating a circle or a segment of a circle. I

A supporting screw member 37 is adapted to threa ably engage in the lower threaded opening 30 in the casing 10 and is provided at the outer end thereof with an enlarged rounded head portion 38 so that when it is desired to use the device for making circles or the like, the weight of the 10 will not strain or otherwise injure the a 'de rule 14, thehead portion 38 of the supporting member 37 being adapted to slidably engage the paper or the like and to maintain the casing 10 in substantially parallel relation to the material. If desired, the cap member 16 may be provided with a suitable opening 39 so that the compass members may be removably carried therein.

In the use of this device, the pencil 12 may be positioned within the annular openi 11 in the casing 10 and the point 22 of the pencil referably protrudes outwardly from the ower end portion of the casing 10 so as to permit conventional use of the pencil. Where it is desired to make linear measurements with the device, the desired face of the casing 10 may be exposed and the casing positioned so as-to determine the linear measurement of the article. If desired, the slidable rule member 14 may be pulled outwardly of the elongated slot or opening 13. In this manner, any desired linear measurement may be obtained.

Where it is desired to obtain the diameter of an article which is ordinaril obtained through the use of calipers, the sli able member 14 is moved outwardl from the casi 10 and the cali r member 19 position against the artic e. The indicia ap on one face of the slidable member 14 determine the correct diameter of the annular article. Where it isdesired to draw a circle or the like, the cap member 16 may be removed from the casing and the compass members 32, 34, and 37 removed therefrom, the pivotal member 32 being mounted in the threaded opening 300 in the cap 16, the lead holding member 34 being mounted in the threaded openings 31 and the sup rtin member 37 mounted in the lower tlii- Zaded opening 30. The slidable member 14.- may be moved outwardly the desired distance and rotated about the pivotal member 32. The positions of the compass members on the casmg and rule may be interchanged if desired so as to produce any size of circle desired.

From the foregoing it will be obvious that an exceedin l compact combination tool has been provi e whereby a number of operations may be performed throu the use of the single device, which have not 11 possible throu h the use of any devices at present availa 1e. It will also be obvious that this device may be constructed very cheaply and at the same time an exceedingly practical article will be provided.

It will, of course, be understood that various changes and modifications may be made in the details of construction and design of the above specifically described. em-

bodiment of the invention without departin from the spirit thereof, such changes an modifications bein restricted only by the scope of the followlng claims.

'What is claimed is:

1. A device of the character described and in combination, a casing havin an elongated slot therein spaced inwardly om one face thereof, a slidable member adapted to be mounted in said elongated slot, stop means for limiting the movement of said slidable member within said slot, said casing having threaded openings adjacent the opposite end portions thereof, said slidable member hav ing a threaded opening adjacent the free end portion, a pivot member adapted to threadably engage one of said openings in said casing, a supporting member threadedly engaging said casing in the other of said openings, and a marking member t-hreadably en aging said opening in said slidable mem r, said supporting member being adapted to maintain said casing in substantially horizontal position when the casing is rotated about the pivot member.

2. In combination, a casing having an elongated round opening therethrough whereby to receive a pencil, said casing having an elongated slot therein spaced inwardly from oneface thereof, a slidable rule member loosely carried by said casing in said elongated slot, sto means secured to said slidable member at t e inner end rtion thereof, said casing having 0. reduce end portion, a cap member adapted to be removably mounted on said restricted end portion, and compass means for said casing, said compass means when in inoperative position being normally positioned within said cap member.

In testimony whereof I hereunto affix my K signature.

AUGUST J. GELARDI. 

